Last updated: August 21, 2025
October in Atenas, Costa Rica is characterized by warm temperatures and notable rainfall, making it a unique time to experience the lush beauty of this region. With maximum temperatures reaching 29°C (84°F) and an average of 23°C (73°F), the climate remains inviting despite the copious precipitation. In fact, October sees 639 mm (25.2 in) of rain spread across 30 days, resulting in an 80% humidity level that contributes to the vibrant greenery. This month offers travelers a chance to embrace the tropical atmosphere, perfect for those who enjoy a lush, rejuvenating environment.
In Atenas, Costa Rica, October marks a transitional period where temperatures remain pleasantly moderate. With minimums around 18°C (66°F) and maximums nudging down to 29°C (84°F), this month reflects a slight dip from the summer highs. The average temperature hovers at 23°C (73°F), consistent with the previous months but signaling the approach of the rainy season. Notably, the overall warmth continues, with October maintaining a cozy atmosphere ideal for exploring the lush surroundings. As the month progresses, a gentle increase in rainfall can be expected, creating an enchanting backdrop for the vibrant, green scenery that defines this charming region.
October stands out as a particularly vigorous month for precipitation in Atenas, Costa Rica, receiving a staggering 639 mm (25.2 in) of rainfall over 30 days. This marks the peak of the rainy season, following a dramatic upward trend from the preceding months of September, which already recorded 461 mm (18.2 in). The consistent rainfall throughout October contributes significantly to the lush green landscapes typical of this tropical region. As the month transitions into November, the precipitation decreases substantially to 251 mm (9.9 in), signaling a gradual shift toward the drier months ahead. Despite the heavy rainfall, the vibrant foliage and rich biodiversity showcase the beauty and dynamism of Costa Rica's environment during this period.
As October unfolds in Atenas, Costa Rica, the humidity typically settles at a notable 80%, maintaining the region's characteristic lushness. This month marks a slight dip from the peak levels experienced during the rainy season in June and July, where humidity fluctuates between a steamy 84% to 85%. Following the pattern established in previous months, where humidity hovers around the high 70s to 80s, October provides a balance that can be both refreshing and comforting. As the wet season starts to wane, residents and visitors alike can expect a warm ambiance, punctuated by the rich, vibrant greenery that defines this beautiful part of Costa Rica.
In October, Atenas, Costa Rica, continues to experience extreme UV levels with an index of 14, similar to the preceding summer months. This sustained high exposure indicates that residents and visitors alike should be vigilant about sun safety, as the potential for skin damage remains significant with a burn time of only 10 minutes. The month follows a pattern established from January through September, where the UV Index consistently hovers in the extreme range, peaking in March and April at 15. As we progress into the later months of the year, the UV Index gradually declines, but October still demands caution. For more daily insights on UV exposure in Atenas, check out Atenas UV Index.
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As October unfolds in Atenas, Costa Rica, the sun continues to shine, delivering 211 hours of daylight for locals and visitors to enjoy. While this represents a dip from the peak of 329 hours in March, it reflects a consistent climatic pattern as the year transitions towards the drier months. After the heightened sunlight of January through April, October’s hours are in line with the slightly lower averages seen in the mid-year months, yet still provide ample opportunities for outdoor adventures and scenic vistas. As we near the end of the year, the sun's presence becomes a cherished companion, paving the way for the vibrant landscapes and warm community gatherings that define this enchanting region.
In Atenas, Costa Rica, October sees a modest chance of sunshine, with only 16% likelihood compared to other months. This marks a sharp decline from the sunnier days of January and February, which boast over half of their days basking in sunlight. The transition into the rainy season begins in April, sharply impacting the likelihood of sunny weather, while August and September witness the lowest figures. Even as autumn progresses into November, you’ll find a significant increase to 31%, indicating a recovery towards more cheerful skies. Thus, if you're planning a visit in October, it's wise to brace for cloud cover and occasional showers, but don't lose hope for those elusive sunlit moments.
In Atenas, Costa Rica, October brings a gentle transition in daylight duration, offering 11 hours of daylight. This marks a slight dip as the year gradually shifts from its longest days in March through September, when residents enjoy a consistent 12 hours of sunlight. The daylight trend reveals a fascinating rhythm throughout the year, with January and February sharing the same 11-hour span as October, creating a sense of consistency at the beginning and end of the year. As the days shorten, this intimate encounter with nature's cycles reminds locals and visitors alike of the beauty in changes, setting the stage for cozy evenings as the year draws to a close.
As October rolls in, Atenas, Costa Rica, experiences a gentle lull in wind activity, with an average wind speed dropping to a calm 1.1 m/s (2 mph). This subtle shift reflects a broader seasonal trend where the winds gradually wane after peaking in the early months of the year. Notably, from a brisk 2.1 m/s (5 mph) in March, the wind speeds have steadily declined, culminating in October's serene breezes. As the dry season approaches, residents and visitors alike can savor the balmy atmosphere, characterized by soft gusts that dance through the trees, offering a tranquil backdrop for those seeking peace in this lush, tropical paradise.
Weather in Atenas varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Atenas, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of October and January, October tends to be more humid and wetter, with an average temperature of 23°C (73°F) and high levels of precipitation at 639 mm (25.2 in) over 30 days. The humidity is noticeably high at around 80%, contributing to the lush, green landscape typical of this time. In contrast, January offers a slightly warmer maximum temperature of 31°C (87°F) but with significantly less rainfall, totaling only 28 mm (1.1 in) over just 7 days, and lower humidity levels at 68%. For more details on the specifics of January weather, you can check Atenas weather in January.
October and February present contrasting weather patterns. In October, temperatures range from a minimum of 18°C (66°F) to a maximum of 29°C (84°F), with an average of 23°C (73°F). This month experiences significant rainfall, with 639 mm (25.2 in) over 30 days, contributing to high humidity levels of 80%. In contrast, February tends to be warmer, with temperatures ranging from a minimum of 16°C (62°F) to a maximum of 31°C (88°F) and an average of 24°C (76°F). This month is much drier, receiving only 13 mm (0.5 in) of precipitation over just 3 days, resulting in lower humidity at 68%. For more details, check out Atenas weather in February.
In October, the weather is characterized by a warm and humid climate, with temperatures ranging from a minimum of 18°C (66°F) to a maximum of 29°C (84°F) and an average of 23°C (73°F). The month sees significant rainfall, totaling 639 mm (25.2 in) over 30 days, resulting in high humidity levels around 80%. In contrast, March experiences slightly warmer temperatures, with a minimum of 18°C (64°F) and a maximum of 32°C (89°F), averaging 25°C (77°F). Notably, March is much drier, featuring only 18 mm (0.7 in) of precipitation across about 4 days and lower humidity at 66%. For more detailed information on March weather, visit Atenas weather in March.
In comparing the weather between October and April, both months start with a minimum temperature around 18°C (64-66°F), making for mild mornings. However, April averages slightly warmer overall, with an average temperature of 24°C (76°F) and a maximum of 31°C (89°F), compared to October's average of 23°C (73°F) and max of 29°C (84°F). Notably, October experiences significantly higher precipitation, accumulating 639 mm (25.2 in) over 30 days, whereas April sees only 118 mm (4.6 in) over 24 days, resulting in a drier climate. Humidity levels also differ, with October being more humid at 80% compared to April’s 67%. For more detailed insights, check Atenas weather in April.
When comparing the weather in October and May, both months feature relatively warm temperatures, but October tends to be slightly cooler, with an average of 23°C (73°F) compared to May's 24°C (75°F). October also sees more substantial rainfall, with 639 mm (25.2 in) of precipitation over the month, while May receives 412 mm (16.2 in). Additionally, October experiences higher humidity levels at 80%, whereas humidity in May is lower at 69%. These differences highlight the more pronounced rainy season in October compared to the drier climate of May. For more detailed insights on May weather, check out the link: Atenas weather in May.
In comparing the weather between October and June, we find some notable differences. October typically experiences temperatures ranging from a minimum of 18°C (66°F) to a maximum of 29°C (84°F), with an average of 23°C (73°F). This month is characterized by high humidity at 80% and significant precipitation, averaging 639 mm (25.2 in) over 30 days. In contrast, June's temperatures are slightly warmer, with a minimum of 19°C (66°F) and a maximum of 30°C (86°F), averaging 24°C (75°F). Although June has a similar length of rainfall days (30), it sees less precipitation overall, at 397 mm (15.6 in) and higher humidity at 84%. For a deeper dive into June's weather specifics, you can check out Atenas weather in June.
When comparing the weather in October and July, both months exhibit warm temperatures, but with some notable differences. In October, the minimum temperature is slightly lower at 18°C (66°F) compared to July's minimum of 19°C (67°F), while the average temperatures are similar, with July averaging 24°C (75°F) and October at 23°C (73°F). Despite having the same maximum temperature of 29°C (84°F), October sees significantly higher precipitation, accumulating 639 mm (25.2 in) over 30 days, compared to July's 296 mm (11.7 in). Both months experience high humidity levels, with October at 80% and July at 85%. For a detailed look at July weather, you can visit Atenas weather in July.
When comparing the weather in October to that of August, both months showcase similar average temperatures, hovering around 23°C (73°F). However, October tends to be slightly cooler with a minimum temperature of 18°C (66°F) compared to August's 19°C (66°F). In terms of precipitation, October sees a significantly higher amount at 639 mm (25.2 inches), nearly double that of August, which experiences 393 mm (15.5 inches) over the same number of days. Humidity levels are quite close, with October at 80% and August at 82%. For more details on August weather in Atenas, you can visit Atenas weather in August.
In comparing the weather conditions of October and September, we see that both months feature similar temperature ranges, with minimum temperatures consistently around 18°C (66°F) and average highs reaching up to 29°C (84°F). However, September tends to be slightly warmer on average, at 23°C (74°F) compared to October’s 23°C (73°F). One notable difference is in precipitation; October experiences significantly more rainfall, totaling 639 mm (25.2 in) over 30 days, whereas September records 461 mm (18.2 in) over 29 days. Humidity levels remain comparable, with October at 80% and September slightly higher at 81%. For more insights, you can check Atenas weather in September.
October and November exhibit similar temperature ranges, with both months recording minimum temperatures around 18°C (64-66°F) and maximum temperatures nearing 29°C (84-85°F). However, November experiences a significant decrease in precipitation, receiving only 251 mm (9.9 in) compared to October's 639 mm (25.2 in), making November the drier month. Both months maintain a consistent humidity level of 80%, contributing to a warm and humid atmosphere. For more detailed information, you can check Atenas weather in November.
In comparing October and December weather, both months showcase similar minimum temperatures around 18°C (65°F), with average temperatures slightly varying—23°C (73°F) in October and 23°C (74°F) in December. However, December tends to be warmer at its maximum, reaching up to 30°C (86°F), compared to October's 29°C (84°F). Precipitation contrasts significantly between the two months, with October receiving a substantial 639 mm (25.2 in) over 30 days, while December sees much lighter rainfall at 72 mm (2.8 in) across 18 days. Additionally, December’s humidity is lower at 72%, compared to October's 80%. For more details on December weather, check out Atenas weather in December.
October in Atenas presents a distinct shift in weather dynamics compared to other months. With a max average temperature of 29°C and an 80% humidity level, the atmosphere feels notably warmer and more humid, creating a tropical backdrop perfect for lush greenery. This month also marks the peak of the rainy season, as it experiences almost daily rain, contributing to a staggering 639 mm of precipitation. While these conditions might deter some travelers, those seeking vibrant landscapes and a lush environment will find October to be an intriguing time to visit. For a deeper understanding of how October weather fits into the broader climate profile, check out Atenas Climate.